<script setup>
import { onLoad } from '@dcloudio/uni-app'
import { ref, computed } from 'vue'
import { getGoodsByIdAPI, postMemberCartAPI } from '../../services/goods.js'
import PageSkeleton from './components/PageSkeleton.vue'
import ServicePanel from './components/ServicePanel.vue'
import AddressPanel from './components/AddressPanel.vue'
// 获取屏幕边界到安全区域距离
const { safeAreaInsets } = uni.getSystemInfoSync()
// 获取页面传入的参数
const query = defineProps({
  id: String
})
// 定义变量
const goods = ref({})
const isLoading = ref(false)
// 定义方法
const getGoodsByIdData = async () => {
  const { result } = await getGoodsByIdAPI(query.id)
  goods.value = result
  // 整理SKU组件需要的数据
  localdata.value = {
    _id: result.id,  // 商品id
    name: result.name,  // 商品名称
    goods_thumb: result.mainPictures[0], // 商品主图
    // 规格属性值列表
    spec_list: result.specs.map(v => {
      return {
        name: v.name,
        list: v.values
      }
    }),
    // SKU数据列表
    sku_list: result.skus.map(v => {
      return {
        _id: v.id,   // 规格值id
        goods_id: result.id,  // 商品id
        goods_name: result.name,   // 商品名称
        image: v.picture,   // 规格图片
        price: v.price * 100,  // 数字要乘100
        stock: v.inventory,  // 库存
        sku_name_arr: v.specs.map((vv) => vv.valueName)  // 规格值描述文字数组
      }
    })
  }
}
// 初始化调用
onLoad(() => {
  isLoading.value = true
  getGoodsByIdData()
  isLoading.value = false
})
// 轮播切换
const currentIndex = ref(1)
const changeImg = (ev) => {
  const { current } = ev.detail
  currentIndex.value = current + 1
}
// 显示图片
const showImg = (url) => {
  uni.previewImage({
    urls: goods.value?.mainPictures,
    current: url
  })
}
// ref引用
const popupRef = ref(null)
// 打开类型
const popupType = ref()
// 打开弹框
const openPopup = (val) => {
  popupType.value = val
  popupRef.value.open()
}
// ====================================
// 是否显示SKU组件
const isShowSku = ref(false)
// 商品规格信息
const localdata = ref({})
// 按钮模式
const mode = ref(1)
// 打开sku弹框的方法
const openSkuPopup = (type) => {
  mode.value = type
  isShowSku.value = true
}
// 创建ref引用
const skuPopupRef = ref()
// 计算属性
const selectArrText = computed(() => {
  return skuPopupRef.value?.selectArr.join(' ').trim() || '请选择规格'
})
// 加入购物车
const onAddCart = async (event) => {
  // 发起请求
  await postMemberCartAPI({
    skuId: event._id,
    count: event.buy_num
  })
  // 成功提示
  uni.showToast({ title: '添加成功' })
  // 关闭SKU
  isShowSku.value = false
}
// 接收地址选中组件给的新的地址ID
const addressId = ref()
const changeAddress = (id) => {
  addressId.value = id
}
// 立即购买
const onBuyNow = (event) => {
  const { buy_num, _id } = event
  // 跳转到确认订单页面(传入 skuId, count, addressId)
  uni.navigateTo({
    url:`/pagesOrder/create/create?skuId=${_id}&count=${buy_num}&addressId=${addressId.value}`,
  })
}

</script>

<template>
  <!-- SKU 弹窗组件 -->
  <vk-data-goods-sku-popup 
    ref="skuPopupRef"
    :mode="mode"
    @add-cart="onAddCart"
    @buy-now="onBuyNow"
    :localdata="localdata" 
    v-model="isShowSku"
    add-cart-background-color="#ffa868"
    buy-now-background-color="@27BA98"
    :actived-style="{ color: '#27ba98', borderColor: '#27BA98', backgroundColor: '#e9f8f5'}"
  />
  <PageSkeleton v-if="isLoading"></PageSkeleton>
  <template v-else>
    <scroll-view scroll-y class="viewport">
    <!-- 基本信息 -->
    <view class="goods">
      <!-- 商品主图 -->
      <view class="preview">
        <swiper circular @change="changeImg">
          <swiper-item v-for="item in goods?.mainPictures" :key="item">
            <image mode="aspectFill" @tap="showImg(item)" :src="item" />
          </swiper-item>
        </swiper>
        <view class="indicator">
          <text class="current">{{currentIndex}}</text>
          <text class="split">/</text>
          <text class="total">{{ goods?.mainPictures?.length }}</text>
        </view>
      </view>

      <!-- 商品简介 -->
      <view class="meta">
        <view class="price">
          <text class="symbol">¥</text>
          <text class="number">{{ goods?.price }}</text>
        </view>
        <view class="name ellipsis">{{ goods?.name }}</view>
        <view class="desc"> {{ goods?.desc }} </view>
      </view>

      <!-- 操作面板 -->
      <view class="action">
        <view class="item arrow" @click="openSkuPopup(1)">
          <text class="label">选择</text>
          <text class="text ellipsis"> {{selectArrText}} </text>
        </view>
        <view class="item arrow" @click="openPopup('address')">
          <text class="label">送至</text>
          <text class="text ellipsis"> 请选择收获地址 </text>
        </view>
        <view class="item arrow" @click="openPopup('service')">
          <text class="label">服务</text>
          <text class="text ellipsis"> 无忧退 快速退款 免费包邮 </text>
        </view>
      </view>
    </view>

    <!-- 商品详情 -->
    <view class="detail panel">
      <view class="title">
        <text>详情</text>
      </view>
      <view class="content">
        <view class="properties">
          <!-- 属性详情 -->
          <view class="item" v-for="item in goods?.details?.properties" :key="item.name">
            <text class="label">{{ item.name }}</text>
            <text class="value">{{ item.value }}</text>
          </view>
        </view>
        <!-- 图片详情 -->
        <image v-for="item in goods?.details?.pictures" :key="item" mode="widthFix" :src="item"></image>
      </view>
    </view>
    <!-- 同类推荐 -->
    <view class="similar panel">
      <view class="title">
        <text>同类推荐</text>
      </view>
      <view class="content">
        <navigator v-for="item in goods?.similarProducts" :key="item.id" class="goods" hover-class="none"
          :url="`/pages/goods/goods?id=${item.id}`">
          <image class="image" mode="aspectFill" :src="item.picture"></image>
          <view class="name ellipsis">{{ item.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ item.price }}</text>
          </view>
        </navigator>
      </view>
    </view>
    </scroll-view>
    <!-- 用户操作 -->
    <view class="toolbar" :style="{ paddingBottom: safeAreaInsets?.bottom + 'px' }">
      <view class="icons">
        <button class="icons-button"><text class="icon-heart"></text>收藏</button>
        <button class="icons-button" open-type="contact">
          <text class="icon-handset"></text>客服
        </button>
        <navigator class="icons-button" url="/pages/cart/cart2">
          <text class="icon-cart"></text>购物车
        </navigator>
      </view>
      <view class="buttons">
        <view class="addcart" @click="openSkuPopup(2)"> 加入购物车 </view>
        <view class="buynow" @click="openSkuPopup(3)"> 立即购买 </view>
      </view>
    </view>
    <!-- 弹出层 -->
    <uni-popup
      ref="popupRef"
      type="bottom"
    >
      <AddressPanel @sendId="changeAddress" @close="popupRef.close()" v-if="popupType==='address'"></AddressPanel>
      <ServicePanel @close="popupRef.close()" v-if="popupType==='service'"></ServicePanel>
    </uni-popup>
    
  </template>
  
</template>

<style lang="scss">
page {
  height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.viewport {
  background-color: #f4f4f4;
}

.panel {
  margin-top: 20rpx;
  background-color: #fff;
  .title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 90rpx;
    line-height: 1;
    padding: 30rpx 60rpx 30rpx 6rpx;
    position: relative;
    text {
      padding-left: 10rpx;
      font-size: 28rpx;
      color: #333;
      font-weight: 600;
      border-left: 4rpx solid #27ba9b;
    }
    navigator {
      font-size: 24rpx;
      color: #666;
    }
  }
}

.arrow {
  &::after {
    position: absolute;
    top: 50%;
    right: 30rpx;
    content: '\e6c2';
    color: #ccc;
    font-family: 'erabbit' !important;
    font-size: 32rpx;
    transform: translateY(-50%);
  }
}

/* 商品信息 */
.goods {
  background-color: #fff;
  .preview {
    height: 750rpx;
    position: relative;
    .indicator {
      height: 40rpx;
      padding: 0 24rpx;
      line-height: 40rpx;
      border-radius: 30rpx;
      color: #fff;
      font-family: Arial, Helvetica, sans-serif;
      background-color: rgba(0, 0, 0, 0.3);
      position: absolute;
      bottom: 30rpx;
      right: 30rpx;
      .current {
        font-size: 26rpx;
      }
      .split {
        font-size: 24rpx;
        margin: 0 1rpx 0 2rpx;
      }
      .total {
        font-size: 24rpx;
      }
    }
  }
  .meta {
    position: relative;
    border-bottom: 1rpx solid #eaeaea;
    .price {
      height: 130rpx;
      padding: 25rpx 30rpx 0;
      color: #fff;
      font-size: 34rpx;
      box-sizing: border-box;
      background-color: #35c8a9;
    }
    .number {
      font-size: 56rpx;
    }
    .brand {
      width: 160rpx;
      height: 80rpx;
      overflow: hidden;
      position: absolute;
      top: 26rpx;
      right: 30rpx;
    }
    .name {
      max-height: 88rpx;
      line-height: 1.4;
      margin: 20rpx;
      font-size: 32rpx;
      color: #333;
    }
    .desc {
      line-height: 1;
      padding: 0 20rpx 30rpx;
      font-size: 24rpx;
      color: #cf4444;
    }
  }
  .action {
    padding-left: 20rpx;
    .item {
      height: 90rpx;
      padding-right: 60rpx;
      border-bottom: 1rpx solid #eaeaea;
      font-size: 26rpx;
      color: #333;
      position: relative;
      display: flex;
      align-items: center;
      &:last-child {
        border-bottom: 0 none;
      }
    }
    .label {
      width: 60rpx;
      color: #898b94;
      margin: 0 16rpx 0 10rpx;
    }
    .text {
      flex: 1;
      -webkit-line-clamp: 1;
    }
  }
}

/* 商品详情 */
.detail {
  padding-left: 20rpx;
  .content {
    margin-left: -20rpx;
  }
  .properties {
    padding: 0 20rpx;
    margin-bottom: 30rpx;
    .item {
      display: flex;
      line-height: 2;
      padding: 10rpx;
      font-size: 26rpx;
      color: #333;
      border-bottom: 1rpx dashed #ccc;
    }
    .label {
      width: 200rpx;
    }
    .value {
      flex: 1;
    }
  }
}

/* 同类推荐 */
.similar {
  padding-left: 20rpx;
  .content {
    padding: 0 20rpx 20rpx;
    margin-left: -20rpx;
    background-color: #f4f4f4;
    overflow: hidden;
    navigator {
      width: 345rpx;
      padding: 24rpx 20rpx 20rpx;
      margin: 20rpx 20rpx 0 0;
      border-radius: 10rpx;
      background-color: #fff;
      float: left;
    }
    .image {
      height: 260rpx;
    }
    .name {
      height: 80rpx;
      margin: 10rpx 0;
      font-size: 26rpx;
      color: #262626;
    }
    .price {
      line-height: 1;
      font-size: 20rpx;
      color: #cf4444;
    }
    .number {
      font-size: 26rpx;
      margin-left: 2rpx;
    }
  }
  navigator {
    &:nth-child(even) {
      margin-right: 0;
    }
  }
}

/* 底部工具栏 */
.toolbar {
  background-color: #fff;
  height: 100rpx;
  padding: 0 20rpx;
  border-top: 1rpx solid #eaeaea;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-sizing: content-box;
  .buttons {
    display: flex;
    & > view {
      width: 220rpx;
      text-align: center;
      line-height: 72rpx;
      font-size: 26rpx;
      color: #fff;
      border-radius: 72rpx;
    }
    .addcart {
      background-color: #ffa868;
    }
    .buynow {
      background-color: #27ba9b;
      margin-left: 20rpx;
    }
  }
  .icons {
    padding-right: 10rpx;
    display: flex;
    align-items: center;
    flex: 1;
    .icons-button {
      flex: 1;
      text-align: center;
      line-height: 1.4;
      padding: 0;
      margin: 0;
      border-radius: 0;
      font-size: 20rpx;
      color: #333;
      background-color: #fff;
    }
    text {
      display: block;
      font-size: 34rpx;
    }
  }
}
</style>
